#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
#include <assert.h>
unsigned int my_strlen( const char* arr)//size_t  ~  unsigned int 
{
	int count = 0;
	assert(arr != NULL);
	while (*arr++ != '\0')
	{
		count++;
	}
	return count;
}
int mian()
{
	char arr[] = "abcdef";
	printf("%d", my_strlen(arr));
	return 0;
}